Transporting data element changes to other system

I have custom Z table, it contains fields with custom domains. After moving this table to QA, we had to do some changes for domains.

Basically we have reduced the length of fields, due to this when we did database utitlity in DEV, data in the development system is refreshed.Before transporting these changes we checked the data in the QA and we are sure that all the data in the QA is within the allowable limits of the new domains.

But when we tried to transport these changes to QA, request is not moved, but it eneded with errors and it says 'Data type attributes changed, check dependant views'.

After doing the changes for domains, tables are reactivated but it didnt ask for transport request, because at table level we didt do any changes.

Please suggest me, before moving these type of changes do we need to carry any other steps.